WO2019030868A1 - Ventilateur hélicoïdal, dispositif du type soufflante et dispositif à cycle de réfrigération - Google Patents

Ventilateur hélicoïdal, dispositif du type soufflante et dispositif à cycle de réfrigération Download PDF

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Publication number
WO2019030868A1
WO2019030868A1 PCT/JP2017/028959 JP2017028959W WO2019030868A1 WO 2019030868 A1 WO2019030868 A1 WO 2019030868A1 JP 2017028959 W JP2017028959 W JP 2017028959W WO 2019030868 A1 WO2019030868 A1 WO 2019030868A1
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WO
WIPO (PCT)
Prior art keywords
propeller fan
recess
blade
rotation axis
depth
Prior art date
Application number
PCT/JP2017/028959
Other languages
English (en)
Japanese (ja)
Inventor
拓矢 寺本
敬英 田所
勝幸 山本
広陽 伊藤
裕樹 宇賀神
慎悟 濱田
池田　尚史
貴史 阿部
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AU2017427466A priority Critical patent/AU2017427466B2/en
Priority to ES21186773T priority patent/ES2954560T3/es
Priority to CN201780093402.2A priority patent/CN110945251B/zh
Priority to PCT/JP2017/028959 priority patent/WO2019030868A1/fr
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP17920625.5A priority patent/EP3667097B1/fr
Priority to JP2019535515A priority patent/JP6926207B2/ja
Priority to US16/619,692 priority patent/US11434924B2/en
Priority to CN202110894179.XA priority patent/CN113431805B/zh
Priority to SG11202000064PA priority patent/SG11202000064PA/en
Priority to ES17920625T priority patent/ES2960838T3/es
Priority to EP21186773.4A priority patent/EP3916240B1/fr
Publication of WO2019030868A1 publication Critical patent/WO2019030868A1/fr
Priority to AU2020289818A priority patent/AU2020289818B2/en
Priority to JP2021127960A priority patent/JP7199481B2/ja
Priority to US17/852,740 priority patent/US11788547B2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/306—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the suction side of a rotor blade

Definitions

  • the present invention relates to a propeller fan, an air blower, and a refrigeration cycle apparatus including a shaft portion and blades provided on the outer peripheral side of the shaft portion.
  • Patent Document 1 describes a blower impeller.
  • a plurality of substantially circular dimples are provided on the low pressure surface side of the blade in the fan impeller.
  • the diameter of the dimple is 1 mm to 20 mm, and the depth of the dimple is 5% to 50% of the thickness of the blade.
  • boundary layer peeling is more likely to occur on the trailing edge side of the blade than on the leading edge side. For this reason, when the recess is formed in the blade, the boundary layer peeling may be promoted by the recess on the rear edge side of the blade. Therefore, the blower impeller of Patent Document 1 has a problem that the efficiency of the fan may be reduced.
  • the present invention has been made to solve the problems as described above, and it is an object of the present invention to provide a propeller fan, an air blower, and a refrigeration cycle apparatus capable of improving the efficiency.
  • a propeller fan according to the present invention comprises a shaft provided on a rotating shaft, and a blade provided on the outer peripheral side of the shaft and having a leading edge and a trailing edge, and the suction surface of the blade includes A plurality of recesses including a first recess and a second recess disposed on the rear edge side of the first recess in a circumferential direction about the rotation axis are formed, and the depth of the first recess is determined. The depth is deeper than the depth of the second recess.
  • a blower according to the present invention comprises a propeller fan according to the present invention, a fan motor driving the propeller fan, a motor fixing portion fixing the fan motor, and a support portion supporting the motor fixing portion.
  • a refrigeration cycle apparatus includes the propeller fan according to the present invention.
  • a refrigeration cycle apparatus is provided with the air blower according to the present invention.
  • the depth of the recess disposed on the rear edge side in the circumferential direction can be made relatively shallow, it can be prevented that boundary layer peeling is promoted on the rear edge side of the blade. Therefore, the efficiency of the propeller fan can be improved.
  • FIG. 2 is a schematic cross-sectional view showing a II-II cross section of FIG. 1;
  • FIG. 3 is a schematic cross-sectional view showing a III-III cross section of FIG. 1;
  • It is a rear view which shows the structure of the propeller fan 100 which concerns on Embodiment 2 of this invention.
  • It is a front view which shows the principal part structure of the air blower 200 which concerns on Embodiment 3 of this invention.
  • FIG. 1 is a rear view showing a configuration of propeller fan 100 according to the present embodiment.
  • a propeller fan 100 is provided on a rotation axis R and has a cylindrical boss 10 (an example of a shaft portion) that rotates around the rotation axis R, And a plate-like blade 20 of The plurality of blades 20 are disposed at regular angular intervals around the boss 10.
  • the rotational direction of the propeller fan 100 is a counterclockwise direction as shown by the arrow in FIG. Further, in FIG.
  • the surface on the front side of the blade 20 is a suction surface 20a, and the surface on the back side of the blade 20 is a pressure surface 20b.
  • the number of blades 20 is not limited to three.
  • the plurality of blades 20 may be arranged at different angular intervals around the boss 10.
  • the shape of the boss 10 is not limited to the cylindrical shape.
  • the blade 20 has a front edge 21, a rear edge 22, an outer peripheral edge 23 and an inner peripheral edge 24.
  • the front edge 21 is an edge located forward in the rotational direction of the blade 20.
  • the trailing edge 22 is an edge located rearward in the rotational direction of the blade 20.
  • the outer peripheral edge 23 is located on the outer peripheral side of the blade 20 and is an edge provided between the outer peripheral end of the front edge 21 and the outer peripheral end of the rear edge 22.
  • the inner peripheral edge 24 is located on the inner peripheral side of the blade 20 and is an edge provided between the inner peripheral end of the front edge 21 and the inner peripheral end of the rear edge 22.
  • the inner peripheral edge 24 is connected to the outer peripheral surface of the boss 10.
  • the blade 20 is formed of resin.
  • a plurality of concave portions 30 are formed on the negative pressure surface 20 a of the blade 20.
  • the plurality of concave portions 30 are formed only in a portion near the inner periphery of the negative pressure surface 20 a of the blade 20.
  • Each of the plurality of recesses 30 has a circular or elliptical shape when viewed in a direction parallel to the rotation axis R.
  • the shape of the recess 30 when viewed in the direction parallel to the rotation axis R may be another shape such as a polygon.
  • FIG. 2 is a schematic cross-sectional view showing a II-II cross section of FIG.
  • wing 20 centering on the rotating shaft R is shown.
  • three recessed parts 30a, 30b, and 30c of the some recessed parts 30 are shown.
  • the vertical direction in FIG. 2 represents the direction parallel to the rotation axis R, the upper side represents the air flow and the upstream side, and the lower side represents the air flow and the downstream side.
  • the left and right direction in FIG. 2 represents the circumferential direction around the rotation axis R, the left side represents the front edge 21 side, and the right side represents the rear edge 22 side.
  • FIG. 2 shows a cross-sectional shape in the case where it is assumed that the concave portions 30a, 30b, and 30c are cut by a cylindrical surface passing through their respective central portions.
  • each of the concave portions 30 a, 30 b, and 30 c has an opening end 31 formed on the suction surface 20 a and subjected to R-chamfering, and a cylindrical shape extending from the opening end 31 in a direction parallel to the rotation axis R. And a bottom surface 33 that is generally flat.
  • the recess 30a (an example of the first recess) is the most front edge in the circumferential direction around the rotation axis R among the three recesses 30a, 30b, and 30c through which the same cylindrical surface around the rotation axis R passes. It is arranged on the 21 side.
  • the concave portion 30 a is disposed at the most front edge 21 side in the circumferential direction among all the concave portions 30 formed in the negative pressure surface 20 a of one blade 20.
  • the recess 30 b is disposed closer to the rear edge 22 in the circumferential direction than the recess 30 a.
  • the recess 30 c (an example of a second recess) is disposed closer to the rear edge 22 in the circumferential direction than the recess 30 a and the recess 30 b.
  • the recesses 30a, 30b, and 30c are not necessarily arranged on the same circumference centering on the rotation axis R.
  • the blades 20 have a blade thickness distribution in which the blade thickness increases toward the leading edge 21 and decreases toward the trailing edge 22.
  • the depth of the recess 30a is D1.
  • the depth of the recess 30 is the distance from the center of the open end 31 of the recess 30 to the bottom surface 33 in the direction parallel to the rotation axis R.
  • the depth of the recess 30c disposed closer to the rear edge 22 than the recess 30a is D2 shallower than the depth D1 (D1> D2).
  • the depth of the recess 30 closer to the front edge 21 in the circumferential direction is deeper, and the depth of the recess 30 closer to the rear edge 22 in the circumferential direction is smaller.
  • the depth on the front edge 21 side of the central portion of the opening end 31 is Df
  • the depth on the rear edge 22 side of the central portion of the opening end 31 is Dr.
  • the depth Df is deeper than the depth Dr (Df> Dr).
  • Each of the recessed portions 30a, 30b, and 30c has a first open end 31a located on the front edge 21 side and a second open end 31b located on the rear edge 22 side in the circumferential cross section.
  • the radius of curvature R1 of the first open end 31a is smaller than the radius of curvature R2 of the second open end 31b (0 ⁇ R1 ⁇ R2).
  • FIG. 3 is a schematic cross-sectional view showing the III-III cross section of FIG.
  • wing 20 centering on the rotating shaft R is shown.
  • three recessed parts 30a, 30d, and 30e of several recessed parts 30 are shown.
  • the vertical direction in FIG. 3 represents a direction parallel to the rotation axis R, the upper side represents the flow of air, and the lower side represents the flow of air.
  • the left and right direction in FIG. 3 represents the radial direction about the rotation axis R, the left side represents the inner peripheral side, and the right side represents the outer peripheral side.
  • FIG. 3 shows a cross-sectional shape in the case where it is assumed that the recesses 30a, 30d, and 30e are cut in a plane passing through the respective center portions.
  • the depth D3 of the recess 30e disposed on the outer peripheral side is smaller than the depth D1 of the recess 30a disposed on the inner peripheral side than the recess 30e (D3 ⁇ D1 ). Further, the depth D3 of the recess 30e is smaller than the depth D2 of the recess 30c shown in FIG.
  • the recess 30 e functions as a dimple that prevents boundary layer peeling from being promoted.
  • the shape and size of the recess 30e on the outer peripheral side may be the same as the recess 30a on the inner peripheral side, or different from the recess 30a on the inner peripheral side It is also good.
  • the blades 20 have a blade thickness distribution in which the blade thickness increases toward the inner periphery and decreases toward the outer periphery.
  • the propeller fan 100 includes the boss 10 provided on the rotation axis R, and the blade 20 provided on the outer peripheral side of the boss 10 and having the front edge 21 and the rear edge 22 And.
  • a plurality of recesses 30 including a recess 30a and a recess 30c disposed on the rear edge 22 side of the recess 30a in the circumferential direction around the rotation axis R are formed on the suction surface 20a of the blade 20. .
  • the depth D1 of the recess 30a is deeper than the depth D2 of the recess 30c.
  • the boss 10 is an example of the shaft portion.
  • the recess 30a is an example of a first recess.
  • the recess 30 c is an example of a second recess.
  • the depth D2 of the recess 30c disposed on the trailing edge 22 side in the circumferential direction can be made relatively shallow, boundary layer peeling is promoted on the trailing edge 22 side of the blade 20. You can prevent that. Thereby, the efficiency of propeller fan 100 can be improved.
  • the recessed part 30 also functions as a meat theft, the weight of the blade 20 can be reduced while maintaining the strength of the blade 20. Therefore, according to the present embodiment, it is possible to realize low power consumption of the blower having the propeller fan 100. Furthermore, by providing the recess 30, the thickness between the bottom surface 33 of the recess 30 and the pressure surface 20b can be reduced. Thereby, when forming the blade
  • depth Df on the front edge 21 side is deeper than depth Dr on the rear edge 22 side. According to this configuration, air flowing from the front edge 21 side to the rear edge 22 side along the suction surface 20 a can be made less likely to enter the recess 30. Further, according to this configuration, even if part of the air enters the recess 30, the entering air can be easily discharged from the inside of the recess 30 to the rear edge 22 side. Therefore, since the air resistance of the blade
  • recessed portion 30 a is arranged on the most front edge 21 side in the circumferential direction among the plurality of recessed portions 30. According to this configuration, it is possible to obtain an effect of preventing the boundary layer separation from being promoted on the side of the trailing edge 22 of the blade 20 in a wider range of the negative pressure surface 20 a of the blade 20.
  • each of the plurality of recesses 30 is, in the circumferential cross section, a first open end 31 a located on the front edge 21 side and a second on the rear edge 22 side. And an open end 31 b.
  • the radius of curvature R1 of the first open end 31a is smaller than the radius of curvature R2 of the second open end 31b.
  • FIG. 4 is a rear view showing a configuration of propeller fan 100 according to the present embodiment.
  • the propeller fan 100 has a cylindrical shaft 11 provided on the rotation axis R, a plurality of plate-like blades 20 provided on the outer peripheral side of the shaft 11, and a plurality of blades. It has a plurality of connecting parts 25 which connect two blade 20 comrades which adjoin in a peripheral direction among 20, and 20 comrades.
  • Each of the plurality of connection portions 25 has, for example, a plate-like shape, and is provided adjacent to the outer peripheral side of the shaft portion 11.
  • Each of the plurality of connection portions 25 is a trailing edge 22 of the blade 20 located forward in the rotational direction of the propeller fan 100 among the two blades 20 adjacent in the circumferential direction, and the blade 20 located rearward in the same rotational direction
  • the front edge 21 of the is connected smoothly.
  • each of the plurality of connection portions 25 smoothly connects the suction surfaces 20a of the two blades 20 adjacent in the circumferential direction, and smoothly connects the pressure surfaces 20b of the two blades 20 adjacent in the circumferential direction. doing.
  • the propeller fan 100 is a so-called bossless propeller fan that does not have the boss 10.
  • the shaft portion 11, the plurality of blades 20 and the plurality of connection portions 25 are integrally formed of resin. That is, the shaft portion 11, the plurality of blades 20, and the plurality of connection portions 25 constitute an integral wing.
  • the rotational direction of the propeller fan 100 is counterclockwise as shown by the arrow in FIG.
  • a plurality of concave portions 30 are formed on the negative pressure surface 20 a of the blade 20.
  • the plurality of concave portions 30 are formed only in a portion near the inner periphery of the negative pressure surface 20 a of the blade 20.
  • the connection portion 25 is positioned on the inner peripheral side of at least one of the plurality of concave portions 30 formed in the blade 20. Nevertheless, the recess 30 is not formed on the surface on the upstream side of the connection portion 25 (the surface on the near side in FIG. 3).
  • the propeller fan 100 according to the present embodiment is provided adjacent to the plurality of blades 20 provided on the outer peripheral side of the shaft portion 11 and the shaft portion 11, and among the plurality of blades 20 And a connecting portion 25 connecting the two blades 20 adjacent to each other in the direction. According to this configuration, the same effect as that of the first embodiment can be obtained.
  • recessed portion 30 is not formed on the surface on the upstream side of connection portion 25. Since the surface on the upstream side of the connection portion 25 is not necessarily a negative pressure surface, the air resistance of the blade 20 may increase if the recess 30 is formed. In the present embodiment, since the recess 30 is not formed in the connection portion 25, the efficiency reduction of the propeller fan 100 can be prevented.
  • FIG. 5 is a front view showing the main configuration of air blower 200 according to the present embodiment.
  • FIG. 6 is a rear view showing the main configuration of air blower 200 according to the present embodiment.
  • FIG. 5 the structure of the air blower 200 seen from the pressure surface 20b side of the propeller fan 100 is shown.
  • FIG. 6 the structure of the air blower 200 seen from the negative pressure surface 20a side of the propeller fan 100 is shown.
  • the vertical direction in FIGS. 5 and 6 represents the vertical direction. 6, illustration of the recessed part 30 formed in the negative pressure surface 20a of the blade
  • the recess 30 will be described later with reference to FIG.
  • the blower 200 includes a propeller fan 100, a fan motor 110 for driving the propeller fan 100, and a support member 120 for supporting the fan motor 110.
  • the support member 120 has a motor fixing portion 121 for fixing the fan motor 110 and a support portion 122 for supporting the motor fixing portion 121.
  • the support member 120 is fixed to a housing (not shown).
  • the shaft portion 11 of the propeller fan 100 is connected to the output shaft of a fan motor 110 disposed on the rotation axis R.
  • the fan motor 110 is fixed to the motor fixing portion 121 using a fastening member 123 such as a screw.
  • the motor fixing portion 121 of the support member 120 has a rectangular frame shape which is long in the vertical direction.
  • the motor fixing portion 121 may have a plate shape.
  • fixed part 121 is shown by the thick broken line.
  • the outline of the motor fixing portion 121 is disposed outside the fan motor 110 surrounding the fan motor 110 or overlapping with a part of the fan motor 110 There is. Further, when viewed in a direction parallel to the rotation axis R, the outline of the motor fixing portion 121 is disposed on the inner peripheral side relative to the rotation locus of the outer peripheral edge 23 of the blade 20. In FIG.
  • a minimum circle C1 surrounding the whole of the motor fixing portion 121 around the rotation axis R is indicated by a two-dot chain line.
  • the circle C ⁇ b> 1 is disposed on the inner peripheral side of the rotation trajectory of the outer peripheral edge 23 of the blade 20.
  • the motor fixing portion 121 is disposed so as to overlap the region of the propeller fan 100 where aerodynamic work is hardly performed. That is, in the propeller fan 100, the region on the inner circumferential side of the circle C1 is a region where aerodynamic work is hardly performed.
  • the support portions 122 of the support member 120 are two upper support portions 122 a extending parallel to each other from the motor fixing portion 121 upward, and two upper portions extending parallel to each other from the motor fixing portion 121. And the lower support portion 122b of the Both the upper support portion 122 a and the lower support portion 122 b are disposed generally on the extension of the long side of the motor fixing portion 121.
  • a plurality of ribs 26 protruding in the direction along the rotation axis R are formed on the pressure surface 20b of the blade 20 and the surface on the downstream side of the connection portion 25.
  • Each of the plurality of ribs 26 extends radially outward from the outer peripheral portion of the shaft portion 11. Further, each of the plurality of ribs 26 has a turbo wing-like shape that is curved so as to be convex on the front side in the rotational direction.
  • the plurality of ribs 26 have a function of structurally reinforcing the shaft portion 11 of the propeller fan 100, the plurality of blades 20 and the plurality of connection portions 25.
  • the number of ribs 26 in the present embodiment is six, which is twice the number of blades 20. That is, two ribs 26 are provided per blade 20. At least one rib 26 is formed across the connection 25 and the blade 20.
  • the radially outer end 26 a of each of the plurality of ribs 26 is disposed on the inner circumferential side relative to the circle C 1. That is, the plurality of ribs 26 are disposed on the inner peripheral side of the circle C1.
  • FIG. 7 is a rear view showing a configuration of propeller fan 100 according to the present embodiment.
  • the plurality of concave portions 30 are formed only on the inner peripheral side of the circle C ⁇ b> 1 of the negative pressure surface 20 a of the blade 20.
  • the blade surface shape of the negative pressure surface 20a on the inner peripheral side of the circle C1 hardly affects the aerodynamic characteristics of the propeller fan 100.
  • the plurality of recesses 30 are formed at a depth that places emphasis on the function as a meat theft.
  • the connection portion 25 is located on the inner peripheral side of the circle C1. Nevertheless, the recess 30 is not formed on the surface on the upstream side of the connection portion 25 (the surface on the near side in FIG. 7).
  • air blower 200 supports propeller fan 100, fan motor 110 for driving propeller fan 100, motor fixing portion 121 for fixing fan motor 110, and motor fixing portion 121. And a supporting member 120 having a supporting portion 122.
  • the plurality of recesses 30 are formed only on the inner peripheral side with respect to the minimum circle C1 surrounding the motor fixing portion 121 around the rotation axis R. According to this configuration, the plurality of recesses 30 are formed only in the area where aerodynamic work is not performed so much. As a result, the depths of the plurality of recesses 30 can be made deeper, so the blades 20 can be made lighter while maintaining the efficiency of the propeller fan 100. Therefore, according to the present embodiment, it is possible to realize low power consumption of the blower 200 while maintaining the performance of the blower 200.
  • FIG. 8 is a refrigerant circuit diagram showing a configuration of a refrigeration cycle apparatus 300 according to the present embodiment.
  • the air conditioning apparatus is illustrated as the refrigeration cycle apparatus 300 in the present embodiment, the refrigeration cycle apparatus of the present embodiment can also be applied to a refrigerator, a hot water supply apparatus, or the like.
  • the refrigeration cycle apparatus 300 is a refrigerant in which a compressor 301, a four-way valve 302, a heat source side heat exchanger 303, a pressure reducing device 304 and a load side heat exchanger 305 are annularly connected via refrigerant pipes.
  • a circuit 306 is included.
  • the refrigeration cycle apparatus 300 further includes an outdoor unit 310 and an indoor unit 311.
  • the outdoor unit 310 houses a compressor 301, a four-way valve 302, a heat source side heat exchanger 303, a pressure reducing device 304, and a blower 200 for supplying outdoor air to the heat source side heat exchanger 303.
  • a load side heat exchanger 305 and a blower 309 for supplying air to the load side heat exchanger 305 are accommodated.
  • the outdoor unit 310 and the indoor unit 311 are connected via two extension pipes 307 and 308 which are a part of the refrigerant pipe.
  • the compressor 301 is a fluid machine that compresses and discharges the sucked refrigerant.
  • the four-way valve 302 is a device that switches the flow path of the refrigerant between the cooling operation and the heating operation under the control of a control device (not shown).
  • the heat source side heat exchanger 303 is a heat exchanger that exchanges heat between the refrigerant flowing inside and the outdoor air supplied by the blower 200.
  • the heat source side heat exchanger 303 functions as a condenser during cooling operation and functions as an evaporator during heating operation.
  • the pressure reducing device 304 is a device that reduces the pressure of the refrigerant. As the decompression device 304, an electronic expansion valve whose opening degree is adjusted by control of the control device can be used.
  • the load side heat exchanger 305 is a heat exchanger that exchanges heat between the refrigerant flowing inside and the air supplied by the blower 309.
  • the load-side heat exchanger 305 functions as an evaporator during the cooling operation, and functions as a condenser during the heating operation.
  • FIG. 9 is a perspective view showing an internal configuration of the outdoor unit 310 of the refrigeration cycle apparatus 300 according to the present embodiment.
  • the inside of the casing of the outdoor unit 310 is partitioned into a machine room 312 and a fan room 313.
  • a compressor 301, a refrigerant pipe 314, and the like are accommodated in the machine room 312.
  • a substrate box 315 is provided at the top of the machine room 312.
  • a control substrate 316 which constitutes a control device is accommodated.
  • a blower 200 including the propeller fan 100 and a heat source side heat exchanger 303 to which outdoor air is supplied by the blower 200 are accommodated.
  • the propeller fan 100 and a fan motor 110 (not shown in FIG. 9) for driving the propeller fan 100 are supported by a support member 120.
  • As the blower 200 it is possible to use the blower 200 of the third embodiment or another blower including the propeller fan 100 of the first or second embodiment.
  • the refrigeration cycle apparatus 300 includes the propeller fan 100 of the first or second embodiment or the blower 200 of the third embodiment. According to the present embodiment, it is possible to obtain the same effect as any of the first to third embodiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

Un ventilateur hélicoïdal selon la présente invention comprend : une partie arbre qui est disposée sur un arbre tournant ; et une aube qui est disposée sur un côté périphérique externe de la partie arbre et qui comporte un bord d'attaque et un bord de fuite. Plusieurs évidements, qui comprennent un premier évidement et un second évidement qui est situé plus près du bord de fuite que le premier évidement se trouve dans la direction circonférentielle centrée sur l'arbre tournant, sont formés dans une surface de pression négative de l'aube. La profondeur du premier évidement est supérieure à la profondeur du second évidement.
PCT/JP2017/028959 2017-08-09 2017-08-09 Ventilateur hélicoïdal, dispositif du type soufflante et dispositif à cycle de réfrigération WO2019030868A1 (fr)

Priority Applications (14)

Application Number Priority Date Filing Date Title
JP2019535515A JP6926207B2 (ja) 2017-08-09 2017-08-09 プロペラファン及び冷凍サイクル装置
CN201780093402.2A CN110945251B (zh) 2017-08-09 2017-08-09 螺旋桨式风扇、送风装置以及制冷循环装置
PCT/JP2017/028959 WO2019030868A1 (fr) 2017-08-09 2017-08-09 Ventilateur hélicoïdal, dispositif du type soufflante et dispositif à cycle de réfrigération
CN202110894179.XA CN113431805B (zh) 2017-08-09 2017-08-09 螺旋桨式风扇、送风装置以及制冷循环装置
EP17920625.5A EP3667097B1 (fr) 2017-08-09 2017-08-09 Ventilateur hélicoïdal, dispositif du type soufflante et dispositif à cycle de réfrigération
ES21186773T ES2954560T3 (es) 2017-08-09 2017-08-09 Dispositivo de envío de aire y dispositivo de ciclo de refrigeración
US16/619,692 US11434924B2 (en) 2017-08-09 2017-08-09 Propeller fan, air-sending device, and refrigeration cycle device
AU2017427466A AU2017427466B2 (en) 2017-08-09 2017-08-09 Propeller fan, air-sending device, and refrigeration cycle device
SG11202000064PA SG11202000064PA (en) 2017-08-09 2017-08-09 Propeller fan, air-sending device, and refrigeration cycle device
ES17920625T ES2960838T3 (es) 2017-08-09 2017-08-09 Ventilador de hélice, dispositivo soplador y dispositivo de ciclo de refrigeración
EP21186773.4A EP3916240B1 (fr) 2017-08-09 2017-08-09 Soufflante et dispositif de cycle de réfrigération
AU2020289818A AU2020289818B2 (en) 2017-08-09 2020-12-17 Propeller fan, air-sending device, and refrigeration cycle device
JP2021127960A JP7199481B2 (ja) 2017-08-09 2021-08-04 送風装置及び冷凍サイクル装置
US17/852,740 US11788547B2 (en) 2017-08-09 2022-06-29 Propeller fan, air-sending device, and refrigeration cycle device

Applications Claiming Priority (1)

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PCT/JP2017/028959 WO2019030868A1 (fr) 2017-08-09 2017-08-09 Ventilateur hélicoïdal, dispositif du type soufflante et dispositif à cycle de réfrigération

Related Child Applications (2)

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US16/619,692 A-371-Of-International US11434924B2 (en) 2017-08-09 2017-08-09 Propeller fan, air-sending device, and refrigeration cycle device
US17/852,740 Continuation US11788547B2 (en) 2017-08-09 2022-06-29 Propeller fan, air-sending device, and refrigeration cycle device

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WO2019030868A1 true WO2019030868A1 (fr) 2019-02-14

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EP (2) EP3667097B1 (fr)
JP (2) JP6926207B2 (fr)
CN (2) CN113431805B (fr)
AU (2) AU2017427466B2 (fr)
ES (2) ES2954560T3 (fr)
SG (1) SG11202000064PA (fr)
WO (1) WO2019030868A1 (fr)

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CN113431805A (zh) 2021-09-24
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SG11202000064PA (en) 2020-02-27
AU2020289818B2 (en) 2022-03-24
AU2020289818A1 (en) 2021-01-21
AU2017427466A1 (en) 2020-01-16
AU2017427466B2 (en) 2021-01-28
CN110945251A (zh) 2020-03-31
US20220325721A1 (en) 2022-10-13
CN110945251B (zh) 2021-10-29
EP3916240A1 (fr) 2021-12-01
ES2954560T3 (es) 2023-11-23
ES2960838T3 (es) 2024-03-06
JP7199481B2 (ja) 2023-01-05
US20200166048A1 (en) 2020-05-28
CN113431805B (zh) 2023-11-24
JP2021177080A (ja) 2021-11-11
EP3916240B1 (fr) 2023-07-26
EP3667097A1 (fr) 2020-06-17
JP6926207B2 (ja) 2021-08-25
US11788547B2 (en) 2023-10-17
US11434924B2 (en) 2022-09-06

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